Motion-transmitting device.



G. SIEBER.

MOTION TRANSMITTING DEVTCE. APPLICATION FILED FEB. a. 1914.

Patented July 11, 1916.

GOTTWALD SIEBER, OF BLAUEN, GERMANY, ASSIGNOB '10 voe'rnzmmscnn mascnm- ENFABRIK, 0F PLAUEN, GERMANY.

OTION-T ANSMITTING n'nvion' To all whom it may concern:

Be it known that I, GOTTWALD SIEBER, 'a subject of the German Emperor, residing at Plauen, in Vogtland, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Motion- Transmitting Devices, of which the following is a; specification.

The hitherto known universal joints-as for instance the cross joint and ring ]OiI1tS or the so-called Cardan rings, used to connect two bodies so that they are capable of universal movement relative to one another, are considerably expensive in construction and are therefore not applicable in cases,

where great quantities thereof are required. The well known ball joint is less expensive, but in connection with fine instruments as with monometers for connection of the small press piston with the dial work, it has the drawback, that when not carefully treated it ceases to move.

The object of my invention is to provide a device which is as well adapted for "fine mechanisms and instruments as for heavy machinery, and which is simple and extraordinarily inexpensive in construction. The application of my new device, however, is limited to such cases wherein the transmission of movement is accomplished by push action and not by pull action.

The principle on which my invention is based is that between the bodies or parts from one ofwhich motionis to be transmitted to the other, a member or link is in;

terposed which has spherically-shaped end surfaces that are adapted to bear against plane surfaces of the said first named parts and to roll thereon in all directions almost entirely without friction. In order to prevent the said link from displacement relative to the driving and driven parts other than by rolling,

cal pins may be provided on each of the end surfaces of said link and holes made in the opposite driving and driven parts adapted.

to engage said pins. The joint thus formed between the link and the driving and driven parts constitutes a pressure joint which over pivotal joints has the advantage of not requiring any lubrication.

An embodiment of my invention is illustrated in the accompanying drawing, in:

which similar reference characters denote corresponding parts and in wh ch- Specification of Letters Patent. Application filed February a 1914. Serial No. 816,227.

one or more pointed vor coni-- shaped end surfaces n, M.

[Patented My 11, 916.

Figure 1 is an elevation of a part of my device illustrating the principle of my invention; Fig. is a similar View of a modlfied construction; Figs. 3 and 4 are face views of the adjoining parts shown in 2; Fig. 5 is a similar view to Fig. 1 of another modification; Figs..6 and 7 are face views of the adjoining parts shown in Fig.

5 and Figs. 8 and 9 are views at a right an I gle to one another of mydevice illustrating one'fo rm of application thereof.

To illustrate the principle of my invention I shall first refer to Figs. '1 to 7 in which let it be assumed motion is. to be transmitted'from a part a to another part (not shown) through'the'medium of a link 6. Ordinarily 1n such cases in order to provide for freedom of movement in different part to the driven part by push action only.

In Fig. 1 one of the spherically-shaped surfaces I) of the link I) is shown in contact with the plane face a" of the part a. l The rolling movement of thesurface b on the.

plane a is indicated by dotted-lines.

To prevent movement of the parts other than rolling, part 6 may be. provided with a and the part a with a pin?) or pins b b 1) hole a or holes (1 a a (Figs. 2-7) with which the pins engage.

In Figs. 8 and 9, for example, the driving and the drivenfparts are assumed to be lever arms Z, 771. rotatively and m respectively, crosswise to one another.

levers Z and m are adapted to press with their ends P, m having plane bearing surmounted on axles Z which are arranged The ends of the faces against the link at extending between 1 the said levers and having What I claim and desire to secure by Letters Patent is:

1. The combination with a driving anda driven part, having plane surfaces, of a device for transmitting motion from one of said parts to the other, consisting of 'a link Spherioallyloosely interposed betvveen said parts and having spherically-shaped end surfaces adapted to positively bear against said plane and to roll thereon during trans-.

surfaces mission of movement.

2. The combination with a driving and a driven part, having plane surfaces, of a de' vice for transmitting motion from one of said parts to the other, loosely interposed between said parts and having spherically-shaped end surfaces adapted to positively bear against said plane surfaces and to roll thereon during trans-. mission of movement and means for preventing said link from displacement relative to the said parts other than by rolling.

3. The combination-with a driving and a driven part, having plane surfaces, of a device for transmitting motion from one of consisting of a link said means comprising a conical pin projecting from each bearing surface of said link and engaging part. V

In testimony whereof I affix my signature in presence of two witnesses. V

' GOTTWALD SIEBER. Witnesses:

JosEr GANZ, ROBERT H. Nmn.

a hole in the opposite 

